Fireproof attachment for vaults.



T. BRINTNALL & Rv. DOOLITTLE.

FIBBPROOF ATTACHMENT FOB. V-AULTS.

APYLIGATION FILED HOY. 20, 1907.

Patented 001'.. 27, 1908.

INVENMRS,

WYTNES SES.

UNITED STATES PATENT-omnes.

THOMAS M. BRINTNALL, O F OAKLAND, AND ELSON R. DOOLITTLE, OF BERKELEY, CALIFORNIA. i

-Fmnraoor ATTACHMENT non vAUL'rs.

` specificapien of Letters Patent.

ratented oct. 27, 190s.

Application filed. November 20, 1907. Serial No. 402,949.

1 meda and State of California, have invented certain new and. useful Improvements in Fire roof Attachments for Vaults, of which the Tollowing is a specification.

The present invention relates to an improved iireproof attachment for use in connection with safe deposit vaults, and structures of a similar character, the object of the invention being mainly to protect the entrance door to the vault, and more especially the com lex and expensive burglar-proof lock meclianism carried thereby from injury in case of fire.

To comprehend the. invention 4reference should be had to the accompanying sheet of drawings, wherein is illustrated a broken horizontal sectional view of an ordinary safe deposit vault with the improved ireprool attachment ap lied to the face thereof for the rotecting o the door of the Vault and its ook mechanism against the action of iire.

In the drawings, thenumoral 1 is used to designate the front steel Wall of the vault to be protected, and 2 the entrance door thereto, which carries and sup orts the com Hlex and expensive lock mec ianisin 3. T ese parts are ofthe usual construction utilized in connection with the erecting of safe deposit vaults, and vaults generally. Y

The ireproof attachment comprises a lightmetallic body structure 4, secured' to the face or Wall 1 of the vault so as to proj eet there-v from a given distance at each side of the door 2, in order to form a vestibule "5l i metallic frame structure 4 is'surrounded by an louter wall 6 composed of concrete, the thickness of which is sufficient. to oiisetV the action of heat. The "concrete wall `6 is formed with an entrance-way, which is closed by the door 7, said doorin the present case--A constituting an outer `door for the vault This door is composed of the inner and outer face plates 8-9, which are separated by a concrete Wall or bed 10,.Which wall oi bed is of a thickness approximately equal 1tuothe thickness of the concrete wall 6, of thevestibule 5. 7

in the outer door construction shown, the" ieee pla-lee S---Q are connected by the union- .bcltsl l, which bolts extend through the con- The said crete wall or bed 10 of the said door 7, and in addition t'o uniting the said face plates, they serve to support and hold to the. face of the inner .plate 8, the frame 12, Within which work the lock bolts 13. The outer ends of the lock bolts 13 when thrown to lockV the outer door 7, engage the ianged ends 14 of the vestibule frame 4, Aand against such `ilanged ends of the said vestibule frame rests or bears the inner face plate 8 of the door 7, when the door is closed.

The concrete wall or body 6, and likewise the concrete' wall or bed 10` of the outer door 7, We reinforce and strengthen by means of the rods 15, which are disposed horizontally and vertically through the body of concrete, being inserted during the forming of the concrete walls.- However, it is obvious thatl any suitable form of reinforcing material for the concrete may be utilized in place of the reinforcing rods or bands 15.

The inner vault door 2 swings onthe 'crane hinge 16, while the outer vestibule door 7 swings on the crane hinge 17, which said hinges are of the usual construction.

The metallic door and jainb frames generally employed in connection with door constructions are omitted, the steps 1S ol the door 7, and the steps 19 ofA the door frame I clips 20, withwhich clips register the anchor clips 21, embedded in the concrete wall or bed 10, when the door 7 is closed. It will be observed that the vestibule 5,

when the door 7 is closed, forms an air chamber for the inner door 2,' Which protects the said door and its burglarroof lock mechanism from the disastrous -e ectof heat, Where the vault is exposed to the action of iire.

The heavy concrete surroundin wall 6, 't0- ether With the concrete Wall 10 o the door 7 eing a norheonductoiyperfect heat rinsulation is obtained; hence full rotection is given to the door proper of t e protected vault, andinasmuc as the vouter door and the concrete body for the vestibule we form without the usual metallic door and j amb frames, heat induction to the interior of the vestibule 5 is provided against.

The described fireproof attachment is simple of construction, inexpensive as to manufacture, and insures perfect protection to the -by Letters Patent is- 1. A iireproof attachment for the door of a deposit vault and in combination with the vault, a metallic vestibule frame secured to the face of the vault to encompass the door thereof, of a' concrete wall embracing the vestibule frame, and a door for closing the entrance-Way to the vestibule, the same comprising face plates separated b a concrete Wall of approximately the thic ness of the vestibule Wall. 1

2.- A iireproof attachment for the door of a depositijvault `and in combination with the vault, a vestibule frame secured to the face of the vault to encompass the door thereof, of a K concrete Wall embracing the vestibule frame,

posit vault, which c( nsists in surrounding the door of the vault to be protected by a vestibule having its Walls composedlof concrete, and closing the entrance-Way of the vestibule by a door consisting of face plates separated by a Wall of concrete, forming a closed air chamber around the door of the vault when the door to the vestibule is closed.

. ln testimony whereof We have signed our names to this specification in the presence of tWo subscribin Witnesses.

T OMAS M. BRINTNALL. NELSON yR. DOOLlTlLE.' Witnesses:

N. A. ACKER, 4 131B. RICHARDS 

